Which tana ?

Hey guys, I managed to pull 2 Tanas in 100 orbs and they’re both -SPD because why not?
I’m not very lucky with seasonal fliers (-Spd Spring Kagero, -Atk Spring Camilla and -Spd Summer Corrin but hey that’s life).
Those Tanas are respectively +Hp and + Res, which are both superboons.
Do we agree on the fact that +Res is at least better than +HP ?
If I merge them together she’ll get +1 hp and spd so maybe I should do that rather than foddering her.
Thanks in advance boys